Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
sach ty » sach y, sach tu, sach thu
van cau » van hau, van chat, toan cau
van dau » van dao, phan dau
va hanh » van hanh, va thanh, va danh
ty nang » ky nang, ty xang, ty hang
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ((ma hoi) or (xa hoi)). hieu ((van cau) or (van dau)) xuc va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((ma hoi) OR (xa hoi)). hieu ((van cau) OR (van dau)) xuc va hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((ma hoi) or (xa hoi)). hieu ((van cau) or (van dau)) xuc va hanh dai cua triet*.